Proteomic profiling between CNE-2 and its strongly metastatic subclone S-18 and functional characterization of HSP27 in metastasis of nasopharyngeal carcinoma
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摘要Metastasis to secondary sites remains the leading cause of nasopharyngeal carcinoma (NPC)-associated death. In order to identify the candidate protein(s) responsible for the differential metastatic capacity, the protein expression profiling between NPC cell line CNE-2 and its highly metastatic subclone S-18 were compared by 2-DE. In total, 18 spots were differentially expressed between these two cell lines. Among all, seven proteins were identified with further MS analysis. Western blotting further validated upregulation of HSP27 and ezrin, and downregulation of valosin containing protein and keratin 18 in S-18. Moreover, the knockdown of HSP27 was found to significantly decrease the invasive ability of S-18. On the other hand, overexpression of HSP27 in NP460 cells, which generated little endogenous HSP27 and less invasive, was noted to gain enhanced metastatic capability. Real-time PCR confirmed that the transcriptional levels of NF-kappa B and MMP9, MMP11 were downregulated after inhibition of HSP27 in S-18, which implicated that HSP27 enhanced the metastatic property of NPC cells probably via the NF-kappa B-mediated activation of MMPs. The findings in this work provided us a platform for further elucidating the underlying mechanisms of NPC metastasis and demonstrated that HSP27 would be a valid target for anti-cancer drug development.
著者Li GP, Wang H, Lai YK, Chen SC, Lin MCM, Lu G, Zhang JF, He XG, Qian CN, Kung HF
期刊名稱Proteomics
詳細描述To ORKTS: doi: 10.1002/pmic.201000483
出版年份2011
月份7
日期1
卷號11
期次14
出版社Wiley-VCH Verlag
頁次2911 - 2920
國際標準期刊號1615-9853
電子國際標準期刊號1615-9861
語言英式英語
關鍵詞Biomedicine; Functional characterization; HSP27; Metastasis; Nasopharyngeal carcinoma; Proteomics profile
Web of Science 學科類別Biochemical Research Methods; BIOCHEMICAL RESEARCH METHODS; Biochemistry & Molecular Biology; BIOCHEMISTRY & MOLECULAR BIOLOGY

上次更新時間 2020-30-11 於 00:07